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alistair23-linux/include/net/nfc/nci.h
Vincent Cuissard 9961127d4b NFC: nci: add generic uart support 
Some NFC controller supports UART as host interface.
As with SPI, a lot of code can be shared between vendor
drivers. This patch add the generic support of UART and
provides some extension API for vendor specific needs.

This code is strongly inspired by the Bluetooth HCI ldisc
implementation. NCI UART vendor drivers will have to register
themselves to this layer via nci_uart_register.

Underlying tty will have to be configured from user land
thanks to an ioctl.

Signed-off-by: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2015-06-11 23:37:37 +02:00

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/*
* The NFC Controller Interface is the communication protocol between an
* NFC Controller (NFCC) and a Device Host (DH).
*
* Copyright (C) 2014 Marvell International Ltd.
* Copyright (C) 2011 Texas Instruments, Inc.
*
* Written by Ilan Elias <ilane@ti.com>
*
* Acknowledgements:
* This file is based on hci.h, which was written
* by Maxim Krasnyansky.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef __NCI_H
#define __NCI_H
#include <net/nfc/nfc.h>
/* NCI constants */
#define NCI_MAX_NUM_MAPPING_CONFIGS 10
#define NCI_MAX_NUM_RF_CONFIGS 10
#define NCI_MAX_NUM_CONN 10
#define NCI_MAX_PARAM_LEN 251
#define NCI_MAX_PACKET_SIZE 258
/* NCI Status Codes */
#define NCI_STATUS_OK 0x00
#define NCI_STATUS_REJECTED 0x01
#define NCI_STATUS_RF_FRAME_CORRUPTED 0x02
#define NCI_STATUS_FAILED 0x03
#define NCI_STATUS_NOT_INITIALIZED 0x04
#define NCI_STATUS_SYNTAX_ERROR 0x05
#define NCI_STATUS_SEMANTIC_ERROR 0x06
#define NCI_STATUS_UNKNOWN_GID 0x07
#define NCI_STATUS_UNKNOWN_OID 0x08
#define NCI_STATUS_INVALID_PARAM 0x09
#define NCI_STATUS_MESSAGE_SIZE_EXCEEDED 0x0a
/* Discovery Specific Status Codes */
#define NCI_STATUS_DISCOVERY_ALREADY_STARTED 0xa0
#define NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED 0xa1
#define NCI_STATUS_DISCOVERY_TEAR_DOWN 0xa2
/* RF Interface Specific Status Codes */
#define NCI_STATUS_RF_TRANSMISSION_ERROR 0xb0
#define NCI_STATUS_RF_PROTOCOL_ERROR 0xb1
#define NCI_STATUS_RF_TIMEOUT_ERROR 0xb2
/* NFCEE Interface Specific Status Codes */
#define NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED 0xc0
#define NCI_STATUS_NFCEE_TRANSMISSION_ERROR 0xc1
#define NCI_STATUS_NFCEE_PROTOCOL_ERROR 0xc2
#define NCI_STATUS_NFCEE_TIMEOUT_ERROR 0xc3
/* NFCEE Interface/Protocols */
#define NCI_NFCEE_INTERFACE_APDU 0x00
#define NCI_NFCEE_INTERFACE_HCI_ACCESS 0x01
#define NCI_NFCEE_INTERFACE_TYPE3_CMD_SET 0x02
#define NCI_NFCEE_INTERFACE_TRANSPARENT 0x03
/* Destination type */
#define NCI_DESTINATION_NFCC_LOOPBACK 0x01
#define NCI_DESTINATION_REMOTE_NFC_ENDPOINT 0x02
#define NCI_DESTINATION_NFCEE 0x03
/* Destination-specific parameters type */
#define NCI_DESTINATION_SPECIFIC_PARAM_RF_TYPE 0x00
#define NCI_DESTINATION_SPECIFIC_PARAM_NFCEE_TYPE 0x01
/* NFCEE Discovery Action */
#define NCI_NFCEE_DISCOVERY_ACTION_DISABLE 0x00
#define NCI_NFCEE_DISCOVERY_ACTION_ENABLE 0x01
/* NCI RF Technology and Mode */
#define NCI_NFC_A_PASSIVE_POLL_MODE 0x00
#define NCI_NFC_B_PASSIVE_POLL_MODE 0x01
#define NCI_NFC_F_PASSIVE_POLL_MODE 0x02
#define NCI_NFC_A_ACTIVE_POLL_MODE 0x03
#define NCI_NFC_F_ACTIVE_POLL_MODE 0x05
#define NCI_NFC_V_PASSIVE_POLL_MODE 0x06
#define NCI_NFC_A_PASSIVE_LISTEN_MODE 0x80
#define NCI_NFC_B_PASSIVE_LISTEN_MODE 0x81
#define NCI_NFC_F_PASSIVE_LISTEN_MODE 0x82
#define NCI_NFC_A_ACTIVE_LISTEN_MODE 0x83
#define NCI_NFC_F_ACTIVE_LISTEN_MODE 0x85
#define NCI_RF_TECH_MODE_LISTEN_MASK 0x80
/* NCI RF Technologies */
#define NCI_NFC_RF_TECHNOLOGY_A 0x00
#define NCI_NFC_RF_TECHNOLOGY_B 0x01
#define NCI_NFC_RF_TECHNOLOGY_F 0x02
#define NCI_NFC_RF_TECHNOLOGY_V 0x03
/* NCI Bit Rates */
#define NCI_NFC_BIT_RATE_106 0x00
#define NCI_NFC_BIT_RATE_212 0x01
#define NCI_NFC_BIT_RATE_424 0x02
#define NCI_NFC_BIT_RATE_848 0x03
#define NCI_NFC_BIT_RATE_1695 0x04
#define NCI_NFC_BIT_RATE_3390 0x05
#define NCI_NFC_BIT_RATE_6780 0x06
#define NCI_NFC_BIT_RATE_26 0x20
/* NCI RF Protocols */
#define NCI_RF_PROTOCOL_UNKNOWN 0x00
#define NCI_RF_PROTOCOL_T1T 0x01
#define NCI_RF_PROTOCOL_T2T 0x02
#define NCI_RF_PROTOCOL_T3T 0x03
#define NCI_RF_PROTOCOL_ISO_DEP 0x04
#define NCI_RF_PROTOCOL_NFC_DEP 0x05
#define NCI_RF_PROTOCOL_T5T 0x06
/* NCI RF Interfaces */
#define NCI_RF_INTERFACE_NFCEE_DIRECT 0x00
#define NCI_RF_INTERFACE_FRAME 0x01
#define NCI_RF_INTERFACE_ISO_DEP 0x02
#define NCI_RF_INTERFACE_NFC_DEP 0x03
/* NCI Configuration Parameter Tags */
#define NCI_PN_ATR_REQ_GEN_BYTES 0x29
#define NCI_LN_ATR_RES_GEN_BYTES 0x61
#define NCI_LA_SEL_INFO 0x32
#define NCI_LF_PROTOCOL_TYPE 0x50
#define NCI_LF_CON_BITR_F 0x54
/* NCI Configuration Parameters masks */
#define NCI_LA_SEL_INFO_ISO_DEP_MASK 0x20
#define NCI_LA_SEL_INFO_NFC_DEP_MASK 0x40
#define NCI_LF_PROTOCOL_TYPE_NFC_DEP_MASK 0x02
#define NCI_LF_CON_BITR_F_212 0x02
#define NCI_LF_CON_BITR_F_424 0x04
/* NCI Reset types */
#define NCI_RESET_TYPE_KEEP_CONFIG 0x00
#define NCI_RESET_TYPE_RESET_CONFIG 0x01
/* NCI Static RF connection ID */
#define NCI_STATIC_RF_CONN_ID 0x00
/* NCI Data Flow Control */
#define NCI_DATA_FLOW_CONTROL_NOT_USED 0xff
/* NCI RF_DISCOVER_MAP_CMD modes */
#define NCI_DISC_MAP_MODE_POLL 0x01
#define NCI_DISC_MAP_MODE_LISTEN 0x02
/* NCI Discover Notification Type */
#define NCI_DISCOVER_NTF_TYPE_LAST 0x00
#define NCI_DISCOVER_NTF_TYPE_LAST_NFCC 0x01
#define NCI_DISCOVER_NTF_TYPE_MORE 0x02
/* NCI Deactivation Type */
#define NCI_DEACTIVATE_TYPE_IDLE_MODE 0x00
#define NCI_DEACTIVATE_TYPE_SLEEP_MODE 0x01
#define NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE 0x02
#define NCI_DEACTIVATE_TYPE_DISCOVERY 0x03
/* Message Type (MT) */
#define NCI_MT_DATA_PKT 0x00
#define NCI_MT_CMD_PKT 0x01
#define NCI_MT_RSP_PKT 0x02
#define NCI_MT_NTF_PKT 0x03
#define nci_mt(hdr) (((hdr)[0]>>5)&0x07)
#define nci_mt_set(hdr, mt) ((hdr)[0] |= (__u8)(((mt)&0x07)<<5))
/* Packet Boundary Flag (PBF) */
#define NCI_PBF_LAST 0x00
#define NCI_PBF_CONT 0x01
#define nci_pbf(hdr) (__u8)(((hdr)[0]>>4)&0x01)
#define nci_pbf_set(hdr, pbf) ((hdr)[0] |= (__u8)(((pbf)&0x01)<<4))
/* Control Opcode manipulation */
#define nci_opcode_pack(gid, oid) (__u16)((((__u16)((gid)&0x0f))<<8)|\
((__u16)((oid)&0x3f)))
#define nci_opcode(hdr) nci_opcode_pack(hdr[0], hdr[1])
#define nci_opcode_gid(op) (__u8)(((op)&0x0f00)>>8)
#define nci_opcode_oid(op) (__u8)((op)&0x003f)
/* Payload Length */
#define nci_plen(hdr) (__u8)((hdr)[2])
/* Connection ID */
#define nci_conn_id(hdr) (__u8)(((hdr)[0])&0x0f)
/* GID values */
#define NCI_GID_CORE 0x0
#define NCI_GID_RF_MGMT 0x1
#define NCI_GID_NFCEE_MGMT 0x2
#define NCI_GID_PROPRIETARY 0xf
/* ----- NCI over SPI head/crc(tail) room needed for outgoing frames ----- */
#define NCI_SPI_HDR_LEN 4
#define NCI_SPI_CRC_LEN 2
/* ---- NCI Packet structures ---- */
#define NCI_CTRL_HDR_SIZE 3
#define NCI_DATA_HDR_SIZE 3
struct nci_ctrl_hdr {
__u8 gid; /* MT & PBF & GID */
__u8 oid;
__u8 plen;
} __packed;
struct nci_data_hdr {
__u8 conn_id; /* MT & PBF & ConnID */
__u8 rfu;
__u8 plen;
} __packed;
/* ------------------------ */
/* ----- NCI Commands ---- */
/* ------------------------ */
#define NCI_OP_CORE_RESET_CMD nci_opcode_pack(NCI_GID_CORE, 0x00)
struct nci_core_reset_cmd {
__u8 reset_type;
} __packed;
#define NCI_OP_CORE_INIT_CMD nci_opcode_pack(NCI_GID_CORE, 0x01)
#define NCI_OP_CORE_SET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x02)
struct set_config_param {
__u8 id;
__u8 len;
__u8 val[NCI_MAX_PARAM_LEN];
} __packed;
struct nci_core_set_config_cmd {
__u8 num_params;
struct set_config_param param; /* support 1 param per cmd is enough */
} __packed;
#define NCI_OP_CORE_CONN_CREATE_CMD nci_opcode_pack(NCI_GID_CORE, 0x04)
#define DEST_SPEC_PARAMS_ID_INDEX 0
#define DEST_SPEC_PARAMS_PROTOCOL_INDEX 1
struct dest_spec_params {
__u8 id;
__u8 protocol;
} __packed;
struct core_conn_create_dest_spec_params {
__u8 type;
__u8 length;
__u8 value[0];
} __packed;
struct nci_core_conn_create_cmd {
__u8 destination_type;
__u8 number_destination_params;
struct core_conn_create_dest_spec_params params[0];
} __packed;
#define NCI_OP_CORE_CONN_CLOSE_CMD nci_opcode_pack(NCI_GID_CORE, 0x05)
#define NCI_OP_RF_DISCOVER_MAP_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
struct disc_map_config {
__u8 rf_protocol;
__u8 mode;
__u8 rf_interface;
} __packed;
struct nci_rf_disc_map_cmd {
__u8 num_mapping_configs;
struct disc_map_config mapping_configs
[NCI_MAX_NUM_MAPPING_CONFIGS];
} __packed;
#define NCI_OP_RF_DISCOVER_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
struct disc_config {
__u8 rf_tech_and_mode;
__u8 frequency;
} __packed;
struct nci_rf_disc_cmd {
__u8 num_disc_configs;
struct disc_config disc_configs[NCI_MAX_NUM_RF_CONFIGS];
} __packed;
#define NCI_OP_RF_DISCOVER_SELECT_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
struct nci_rf_discover_select_cmd {
__u8 rf_discovery_id;
__u8 rf_protocol;
__u8 rf_interface;
} __packed;
#define NCI_OP_RF_DEACTIVATE_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
struct nci_rf_deactivate_cmd {
__u8 type;
} __packed;
#define NCI_OP_NFCEE_DISCOVER_CMD nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
struct nci_nfcee_discover_cmd {
__u8 discovery_action;
} __packed;
#define NCI_OP_NFCEE_MODE_SET_CMD nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x01)
#define NCI_NFCEE_DISABLE 0x00
#define NCI_NFCEE_ENABLE 0x01
struct nci_nfcee_mode_set_cmd {
__u8 nfcee_id;
__u8 nfcee_mode;
} __packed;
/* ----------------------- */
/* ---- NCI Responses ---- */
/* ----------------------- */
#define NCI_OP_CORE_RESET_RSP nci_opcode_pack(NCI_GID_CORE, 0x00)
struct nci_core_reset_rsp {
__u8 status;
__u8 nci_ver;
__u8 config_status;
} __packed;
#define NCI_OP_CORE_INIT_RSP nci_opcode_pack(NCI_GID_CORE, 0x01)
struct nci_core_init_rsp_1 {
__u8 status;
__le32 nfcc_features;
__u8 num_supported_rf_interfaces;
__u8 supported_rf_interfaces[0]; /* variable size array */
/* continuted in nci_core_init_rsp_2 */
} __packed;
struct nci_core_init_rsp_2 {
__u8 max_logical_connections;
__le16 max_routing_table_size;
__u8 max_ctrl_pkt_payload_len;
__le16 max_size_for_large_params;
__u8 manufact_id;
__le32 manufact_specific_info;
} __packed;
#define NCI_OP_CORE_SET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x02)
struct nci_core_set_config_rsp {
__u8 status;
__u8 num_params;
__u8 params_id[0]; /* variable size array */
} __packed;
#define NCI_OP_CORE_CONN_CREATE_RSP nci_opcode_pack(NCI_GID_CORE, 0x04)
struct nci_core_conn_create_rsp {
__u8 status;
__u8 max_ctrl_pkt_payload_len;
__u8 credits_cnt;
__u8 conn_id;
} __packed;
#define NCI_OP_CORE_CONN_CLOSE_RSP nci_opcode_pack(NCI_GID_CORE, 0x05)
#define NCI_OP_RF_DISCOVER_MAP_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
#define NCI_OP_RF_DISCOVER_SELECT_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
#define NCI_OP_RF_DEACTIVATE_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
#define NCI_OP_NFCEE_DISCOVER_RSP nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
struct nci_nfcee_discover_rsp {
__u8 status;
__u8 num_nfcee;
} __packed;
#define NCI_OP_NFCEE_MODE_SET_RSP nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x01)
/* --------------------------- */
/* ---- NCI Notifications ---- */
/* --------------------------- */
#define NCI_OP_CORE_CONN_CREDITS_NTF nci_opcode_pack(NCI_GID_CORE, 0x06)
struct conn_credit_entry {
__u8 conn_id;
__u8 credits;
} __packed;
struct nci_core_conn_credit_ntf {
__u8 num_entries;
struct conn_credit_entry conn_entries[NCI_MAX_NUM_CONN];
} __packed;
#define NCI_OP_CORE_GENERIC_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x07)
#define NCI_OP_CORE_INTF_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x08)
struct nci_core_intf_error_ntf {
__u8 status;
__u8 conn_id;
} __packed;
#define NCI_OP_RF_DISCOVER_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
struct rf_tech_specific_params_nfca_poll {
__u16 sens_res;
__u8 nfcid1_len; /* 0, 4, 7, or 10 Bytes */
__u8 nfcid1[NFC_NFCID1_MAXSIZE];
__u8 sel_res_len; /* 0 or 1 Bytes */
__u8 sel_res;
} __packed;
struct rf_tech_specific_params_nfcb_poll {
__u8 sensb_res_len;
__u8 sensb_res[NFC_SENSB_RES_MAXSIZE]; /* 11 or 12 Bytes */
} __packed;
struct rf_tech_specific_params_nfcf_poll {
__u8 bit_rate;
__u8 sensf_res_len;
__u8 sensf_res[NFC_SENSF_RES_MAXSIZE]; /* 16 or 18 Bytes */
} __packed;
struct rf_tech_specific_params_nfcv_poll {
__u8 res_flags;
__u8 dsfid;
__u8 uid[NFC_ISO15693_UID_MAXSIZE]; /* 8 Bytes */
} __packed;
struct rf_tech_specific_params_nfcf_listen {
__u8 local_nfcid2_len;
__u8 local_nfcid2[NFC_NFCID2_MAXSIZE]; /* 0 or 8 Bytes */
} __packed;
struct nci_rf_discover_ntf {
__u8 rf_discovery_id;
__u8 rf_protocol;
__u8 rf_tech_and_mode;
__u8 rf_tech_specific_params_len;
union {
struct rf_tech_specific_params_nfca_poll nfca_poll;
struct rf_tech_specific_params_nfcb_poll nfcb_poll;
struct rf_tech_specific_params_nfcf_poll nfcf_poll;
struct rf_tech_specific_params_nfcv_poll nfcv_poll;
} rf_tech_specific_params;
__u8 ntf_type;
} __packed;
#define NCI_OP_RF_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
struct activation_params_nfca_poll_iso_dep {
__u8 rats_res_len;
__u8 rats_res[20];
};
struct activation_params_nfcb_poll_iso_dep {
__u8 attrib_res_len;
__u8 attrib_res[50];
};
struct activation_params_poll_nfc_dep {
__u8 atr_res_len;
__u8 atr_res[NFC_ATR_RES_MAXSIZE - 2]; /* ATR_RES from byte 3 */
};
struct activation_params_listen_nfc_dep {
__u8 atr_req_len;
__u8 atr_req[NFC_ATR_REQ_MAXSIZE - 2]; /* ATR_REQ from byte 3 */
};
struct nci_rf_intf_activated_ntf {
__u8 rf_discovery_id;
__u8 rf_interface;
__u8 rf_protocol;
__u8 activation_rf_tech_and_mode;
__u8 max_data_pkt_payload_size;
__u8 initial_num_credits;
__u8 rf_tech_specific_params_len;
union {
struct rf_tech_specific_params_nfca_poll nfca_poll;
struct rf_tech_specific_params_nfcb_poll nfcb_poll;
struct rf_tech_specific_params_nfcf_poll nfcf_poll;
struct rf_tech_specific_params_nfcv_poll nfcv_poll;
struct rf_tech_specific_params_nfcf_listen nfcf_listen;
} rf_tech_specific_params;
__u8 data_exch_rf_tech_and_mode;
__u8 data_exch_tx_bit_rate;
__u8 data_exch_rx_bit_rate;
__u8 activation_params_len;
union {
struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
struct activation_params_nfcb_poll_iso_dep nfcb_poll_iso_dep;
struct activation_params_poll_nfc_dep poll_nfc_dep;
struct activation_params_listen_nfc_dep listen_nfc_dep;
} activation_params;
} __packed;
#define NCI_OP_RF_DEACTIVATE_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
struct nci_rf_deactivate_ntf {
__u8 type;
__u8 reason;
} __packed;
#define NCI_OP_RF_NFCEE_ACTION_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x09)
struct nci_rf_nfcee_action_ntf {
__u8 nfcee_id;
__u8 trigger;
__u8 supported_data_length;
__u8 supported_data[0];
} __packed;
#define NCI_OP_NFCEE_DISCOVER_NTF nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
struct nci_nfcee_supported_protocol {
__u8 num_protocol;
__u8 supported_protocol[0];
} __packed;
struct nci_nfcee_information_tlv {
__u8 num_tlv;
__u8 information_tlv[0];
} __packed;
struct nci_nfcee_discover_ntf {
__u8 nfcee_id;
__u8 nfcee_status;
struct nci_nfcee_supported_protocol supported_protocols;
struct nci_nfcee_information_tlv information_tlv;
} __packed;
#endif /* __NCI_H */
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